Replace the argument of nonsfi::MainStart with raw file descriptor.

components/nacl/loader/nonsfi/nonsfi_main.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/nacl/loader/nonsfi/nonsfi_main.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "components/nacl/loader/nonsfi/elf_loader.h"
 #include "components/nacl/loader/nonsfi/irt_interfaces.h"
 #include "native_client/src/include/elf_auxv.h"
 #include "native_client/src/include/nacl_macros.h"
 #include "native_client/src/trusted/desc/nacl_desc_base.h"
+#include "native_client/src/trusted/desc/nacl_desc_io.h"
+#include "native_client/src/trusted/service_runtime/include/sys/fcntl.h"
 
 namespace nacl {
 namespace nonsfi {
 namespace {
 
 typedef void (*EntryPointType)(uintptr_t*);
 
 class PluginMainDelegate : public base::PlatformThread::Delegate {
  public:
   explicit PluginMainDelegate(EntryPointType entry_point)
@@ skipping 31 matching lines @@
 const size_t kStackSize = (16 << 20);
 
 struct NaClDescUnrefer {
   void operator()(struct NaClDesc* desc) const {
     NaClDescUnref(desc);
   }
 };
 
 }  // namespace
 
-void MainStart(NaClDesc* nexe_file) {
-  ::scoped_ptr<struct NaClDesc, NaClDescUnrefer> desc(nexe_file);
+void MainStart(int nexe_file) {
+  ::scoped_ptr<struct NaClDesc, NaClDescUnrefer> desc(
+       NaClDescIoDescFromDescAllocCtor(nexe_file, NACL_ABI_O_RDONLY));
   ElfImage image;
   if (image.Read(desc.get()) != LOAD_OK) {
     LOG(ERROR) << "LoadModuleRpc: Failed to read binary.";
     return;
   }
 
   if (image.Load(desc.get()) != LOAD_OK) {
     LOG(ERROR) << "LoadModuleRpc: Failed to load the image";
     return;
   }
 
   EntryPointType entry_point =
       reinterpret_cast<EntryPointType>(image.entry_point());
   if (!base::PlatformThread::CreateNonJoinable(
           kStackSize, new PluginMainDelegate(entry_point))) {
     LOG(ERROR) << "LoadModuleRpc: Failed to create plugin main thread.";
     return;
   }
 }
 
 }  // namespace nonsfi
 }  // namespace nacl